Remove Last In Linked List
easy
1. You are given a partially written LinkedList class. 2. Here is a list of existing functions: 2.1 addLast - adds a new element with given value to the end of Linked List 2.2. display - Prints the elements of linked list from front to end in a single line. All elements are separated by space 2.3. size - Returns the number of elements in the linked list. 2.4. removeFirst - Removes the first element from Linked List. 2.5. getFirst - Returns the data of first element. 2.6. getLast - Returns the data of last element. 2.7. getAt - Returns the data of element available at the index passed. 2.8. addFirst - adds a new element with given value in front of linked list. 2.9. addAt - adds a new element at a given index. 3. You are required to complete the body of removeLast function. This function should remove the last element and update appropriate data members. If the size is 0, should print "List is empty". If the size is 1, should set both head and tail to null. 4. Input and Output is managed for you.
Constraints
None
Format
Input
Input is managed for you
Output
Output is managed for you
Example
Sample Input
addFirst 10
getFirst
addAt 0 20
getFirst
getLast
display
size
addAt 2 40
getLast
addAt 1 50
addFirst 30
removeFirst
getFirst
removeLast
removeLast
addAt 2 60
display
size
removeFirst
removeLast
getFirst
quit
Sample Output
10
20
10
20 10
2
40
20
20 50 60
3
50
Question Video